Worksheet 670 · Skill 6
Course to steer
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You are at 337°T, 2.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 11.8 kn. The current sets 255°T at 1.1 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 019°T, 1.8 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 7.7 kn. The current sets 042°T at 1.0 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 057°T, 3.2 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 6.4 kn. The current sets 209°T at 1.5 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 287°T, 1.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.3 kn. The current sets 323°T at 1.7 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 216°T, 1.2 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.6 kn. The current sets 046°T at 1.9 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 044°T, 2.4 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 8.8 kn. The current sets 285°T at 0.9 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 028°T, 2.1 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.5 kn. The current sets 121°T at 1.2 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 028°T, 2.5 nm from Mill stack, bound for Red nun "2". Your speed through the water is 9.0 kn. The current sets 290°T at 2.5 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 202 °T Speed over the ground: 12.5 kn Time to the mark: 29 min | No. 670001 (worked solution) |
| 2 | Course to steer: 072 °T Speed over the ground: 8.6 kn Time to the mark: 23 min | No. 670002 (worked solution) |
| 3 | Course to steer: 142 °T Speed over the ground: 7.1 kn Time to the mark: 30 min | No. 670003 (worked solution) |
| 4 | Course to steer: 189 °T Speed over the ground: 4.3 kn Time to the mark: 57 min | No. 670004 (worked solution) |
| 5 | Course to steer: 267 °T Speed over the ground: 4.3 kn Time to the mark: 58 min | No. 670005 (worked solution) |
| 6 | Course to steer: 020 °T Speed over the ground: 8.8 kn Time to the mark: 15 min | No. 670006 (worked solution) |
| 7 | Course to steer: 262 °T Speed over the ground: 4.6 kn Time to the mark: 79 min | No. 670007 (worked solution) |
| 8 | Course to steer: 306 °T Speed over the ground: 11.4 kn Time to the mark: 15 min | No. 670008 (worked solution) |